HOUSTON -- Attorneys for a Texas woman accused of fatally stabbing her boyfriend with her stiletto heel brought in a martial arts expert to demonstrate for jurors at her trial how they believe she was attacked on the night of the killing.

Ana Trujillo is charged with murder in the death of 59-year-old Alf Stefan Andersson. Investigators say Trujillo struck him at least 25 times in the face with her shoe during an argument at his condominium in June.

During the trial Monday, martial arts expert Chris Martinez and another man performed a demonstration in which the two rolled on the ground trying to recreate the struggle Trujillo alleges happened.

Prosecutor John Jordan tried to suggest to jurors that the demonstration was probably not an accurate depiction of what might have happened the night of the slaying because unlike Andersson, Martinez is a black belt with years of fighting experience while Andersson was "a 59-year-old man who drank too much and was not in the greatest physical health."

"You would agree with me there is a big difference between you and Stefan Andersson?" Jordan asked.

"Correct," Martinez said.

On Monday, Trujillo's attorney also presented medical records detailing what he believes are injuries Trujillo suffered during the alleged attack, including bruising to her legs and arms.

But Jordan suggested to jurors Trujillo sustained those injuries two weeks before Andersson's death during a fight with an ex-boyfriend and his current girlfriend.

Photos

Ana Lilia Trujillo, left, reacts to hearing a 911 call during her trial Tuesday, April 1, 2014, in Houston. Trujillo, 45, is charged with murder, accused of killing her 59-year-old boyfriend, Alf Stefan Andersson with the heel of a stiletto shoe. (AP Photo/Houston Chronicle, Brett Coomer)